Just depends what you wanna do.
Either melee or cast
for melee go fighter or barb
For Melee-
When your at lvl 55 with your gear on you want your dex to be around 110-120. Put the rest of the stats into strength
For items-
Weapon- Enhanced Effect( the higher the better)
Armor- For catacombs look for heavy armors with EE. For arena look for heavy armors with stats such as strength or dex
For charms- Look for stats such as strength or dex
If you wanna cast go mage put all stats into intelligence
Look for intellgience on your wpn/armor and Enhanced effect on your attack charm and heal charm.
lmk if you have any questions